PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9165013-1 1997 Previous in vivo studies from our laboratory indicated that administration of the antiprogestin RU486 on proestrus suppresses both the preovulatory gonadotropin surges and the secondary FSH surge, suggesting a role for the progesterone receptor (PR) in the generation of these surges. Mifepristone 96-101 progesterone receptor Rattus norvegicus 223-244 9165013-1 1997 Previous in vivo studies from our laboratory indicated that administration of the antiprogestin RU486 on proestrus suppresses both the preovulatory gonadotropin surges and the secondary FSH surge, suggesting a role for the progesterone receptor (PR) in the generation of these surges. Mifepristone 96-101 progesterone receptor Rattus norvegicus 246-248